the time. >> reporter: many of these findings being discussed right now at the lunar and planetary science conference down in houston. a lot of smart folks, martha. martha: yeah, that's for sure. very interesting. so what about this computer glitch, what's that all about? >> reporter: well the rover is about the sizes of a car. it is not operated like a joystick from a videogame. it gets its commands from computer signals. we understand one of those signals failed. so the robot went into safe mode. remember this thing is 140 million miles away. but nasa engineers say they have the problem figured out and "curiosity" will be tooling around up there on the martian surface in the next day or two, martha. martha: amazing. incredible pictures. thanks, casey. >> reporter: yeah. bill: back to the breaking news now, this reported chemical weapons attack killing at least 25, that is the report now in the country of syria. developments on what we know at the top of the hour. [shouting] [ male announcer ] how do you measure happiness? by the armful? by the barrelful? e carful? how about...by the bowl